Hacking the computer network is a creation of the electric age,but it is based on old-fashioned trust.it cannot work without trust.a rogue loose in a computer system called hacker is worse than a thief entering your house.he could go through anyones electronic mail or add to,change,distort or delete anything in the information stored in the computers memory.he could even take control of the entire system by placing his own instructions in the software that runs it.he could shut the computer down whenever he wished,and no one could stop him.then he could program the computer to erase any sign of his ever having been there. 练习: A.to show that A.hacker is more dangerous than A.thief. C.to demanD.that A.protective computer system shoulD.be set up against thieves. 2.the worD.vandalizing in line 17 means B.creating. D.updating, A.hacking is also known as computer break-in. C.hacking is A.widespreaD.concern. 4.which of the following is not mentioneD.in the passage as an instance of attack by A.hacker? B.shutting down the computer whenever he wishes. D.spoiling A.system for air traffic. A.it will cause fear among the public. C.tough measures are illegal. 【参考答案】1. A 2.C 3. B 4. C 5. D
新概念英语第一册 Lesson 89:For sale
新概念英语第一册 Lesson 125:Tea for two
新概念英语第一册 Lesson 71:He’s awful
新概念英语第一册 Lesson 83:Going on holiday
新概念英语第一册 Lesson 55:The Sawyer family
新概念英语第一册 Lesson 137:A pleasant dream
新概念英语第一册 Lesson 109:A good idea
新概念英语第一册 Lesson 113:Small change
新概念英语第一册 Lesson 43:Hurry up
新概念英语第一册 Lesson 95:Tickets,please
新概念英语第一册 Lesson 77:Terrible toothache
新概念英语第一册 Lesson 127:A famous actress
新概念英语第一册 Lesson 101:A card from Jimmy
新概念英语第一册 Lesson 57:An unusual day
新概念英语第一册 Lesson 105:Full of mistakes
新概念英语第一册 Lesson 79:Carol’s shopping list
新概念英语第一册 Lesson 121:The man in the hat
新概念英语第一册 Lesson 39:Don’t drop it
新概念英语第一册 Lesson 99:Owl
新概念英语第一册 Lesson 75:Uncomfortable shoes
新概念英语第一册 Lesson 67:The weekend
新概念英语第一册 Lesson 91:Poor Ian
新概念英语第一册 Lesson 49:At the butcher’s
新概念英语第一册 Lesson 81:Roast beef and potatoes
新概念英语第一册 Lesson 103:The French test
新概念英语第一册 Lesson 107:It’s too small
新概念英语第一册 Lesson 41:Penny’s bag
新概念英语第一册 Lesson 45:The boss’s letter
新概念英语第一册 Lesson 59:Is that all
新概念英语第一册 Lesson 117: Tommy’s breakfast
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